Pocket shroud for stator winding machine



Oct. 3, 1967 M. J. STRAUS ET AL 3,345,001

POCKET SHROUD FOR STATOR WINDING MACHINE I Filed March 29, 1965 7sheets-sheet 1 Oct. 3, 1967 M. J. sTRAuB ET AL 3,345,001

POCKET SHROUD FOR STATOR WINDING MACHINE Filed March 29, 1965 7sheets-Sheet 2 Qct. 3, 1967 M, 1 STRAUS ET AL 3,345,001

' POCKET SHROUD FOR STATOR WINDING MACHINE '7 Sheets-Sheet 5 Filed March29, 1965 u8 SHA FF A TTQRNEY;

1^' V ENTR :MELv/NJJTRA GERALD l1.

Oct. 3, 1967 M 1 STRAUB ET AL 3,345,001*

POCKETSHROUD FOR STATOR WINDING MACHINE Filed March 29, 1965 7Sheets-#Sheet 4 TTQRNE Yr Oct. 3, 1967 M. J. STRAUB ET AL 3,345,001

POCKET SHROUD FOR STATOR WINDING MACHINE Filed March 29, 1965 vsheets-sheet 5 ArraR/VEYJ M. J. STRAUS ET A1. 3,345,001 POCKET SHROUDFOR STATOR WINDING MACHINE Oct. 3, 1967 '7 Sheets-Sheet 6 Filed March29, 1965 B E wkn H M? vf.

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ATraRNEYs Oct. 3, 1967 M. J. STRALJB ET AL 3,345,001

POCKET SHROUD FOR STATOR WINDING MACHINE Filed MarCh 29,. 1965 7SheeLS-Sheell '7 F/G. 9 FIG. IO

/NVEN Tok; MEL v//v J .fm/4 Us GERA Lo Il. JHA FF A g, Wwf/lim ATTORNEY:

United States Patent O 3,345,001 POCKET SHROUD FOR STATOR WINDINGMACHINE Melvin J. Straub, Hopkins, Minn., and Gerald H. Shaif, Racine,Wis., assignors to Possis Machine Corporation,

Minneapolis, Minn., a corporation of Minnesota Filed Mar. 29, 1965, Ser.No. 443,351 9 Claims. (Cl. 242 1.1)

ABSTRACT OF THE DISCLOSURE A device and method for supporting andforming the ends of coils being wound onto slotted cores for electricalmachines. The device has a shroud which is separable into two partswhich form a pocket for receiving the ends of the coil. The shroudmounted on a movable carriage moves toward and away from the core yaswell as radially with respect to the core. The shroud parts are lockedtogether during the winding of the coil on the core. After the coil hasbeen wound on the core, the shroud parts are separated with one partheld on a temporary support. The carriage moves both shroud parts awayfrom the core to separate the coil from the shroud. The shroud parts arethen moved back into interlocking relation and moved back toward thecore. When the shroud is adjacent the core it is moved in a radial ordownward direction forcing the previous wound coreV to a position whichdoes not interfere with the next coil wound on the core.

The present invention relates to a device for guiding wire while it isbeing wound into the slots of wire receiving cores of electricalmachinery. More particularly this invention relates to the provision ofpocket forming shrouds which are positioned on each side of cores beingwound, and in alignment with one another which shrouds, after the coilhas been wound, can be separated and withdrawn to release the wire coilso formed. When the shroud is returned to support the next coil, theshroud radially displaces a previous coil end to avoid overlap of coilends. This invention relates also to a method of winding coils onslotted cores for electrical machines in which coil ends are supportedand shaped as they are wound, released when the coil is completed andthen radially displaced to allow the formation of an identical coil inadjacent core slots. Although certain types of machine cores have beenwound with coils by machine for some time, stator cores having manyslots, say 18 or more, involve problems in winding which have preventedany widespread machine winding.

The principal problem has been in providing shrouding for guiding a wireinto the proper position for forming coils and many different approacheshave been attempted. One which has been tried is a series of hooks orlingers so placed that coils could lbe wound on each slot without movingthe iingers or the like until the entire core is finished. Then thefingers were unhooked from all the coils simultaneously. While thisapproach appeared to have promise when iirst devised, in actual practicethe earlier wound coils held by fingers at a fixed radial positioncaused later wound coils to be wound in part on top of old coils.Winding coil ends `over each other tended to produ-ce a build-up orpile-up of coil turns at the coil ends which produced undesirable bulkas Well as inconsistent length in the coils wound. The mechanismnecessary for manipulating fingers holding previously `wound coils outof the way of lingers remaining in position to -accept coils yet to bewound proved mechanically extremely diiiicult and econmicallyunfeasible. Accordingly, machine winding coils correctly onto statorshaving numerous slots has not been widely practiced.

ICC

Thus an object of the present invention is to provide an improved coilwinding machine for electrical machinery elements and particularlystators. It is a further object of this invention to use a pocket formedby a guide shroud during the winding of a coil and then dividing theshroud to release the wire coil.

It is still yet a further object of this invention to provide a shrouddividing structure comprising: driven cam plates; a removable uppershroud part support; a spring loaded shroud lock pin, adapted to engageand lock said shroud, parts together slidably secured to a lower shroudpart support; means for cam actuating said upper shroud part supportwith said driven cam plates; cam actuated means for raising the uppershroud part support; cam actuated means for raising the lower camsupport; means for reinserting said shroud lock pin; and means wherebythe shroud is repositioned by lowering it and placing it adjacent to thenewly indexed slots.

Yet another object of this invention is to provide a stator coil windingmachine and method that winds coils Yof very consistent length.

A still further object of this invention is to provide a coil windingmachine that creates Very compactly wound stators.

Other objects of the invention will become apparent as the descriptionproceeds.

To the accomplishment of the foregoing and related ends, this inventionthen comprises the features hereinafter fully described and particularlypointed out in the claims, the following description setting forth indetail certain illustrative embodiments of the invention, these beingindicative, however, of but a few of the various ways in which theprinciples 4ot the invention may be employed.

The invention is illustrated by the accompanying drawings in whichthesame numerals refer to corresponding parts and in which:

FIGURE l is a plan view and partial section of one shroud assembly andenough of a mating shroud assembly to show their cooperation; brokenlines'show Ihidden parts and portions are broken away;

FIGURE 2 is a longitudinal section on the line 2 2 of FIGURE l and isdrawn to the same scale as FIG- URE 1;

FIGURE 3 is an enlarged, fragmentary section of the shroud taken on theline 2 2 in FIGURE 1 with portions broken away to illustrate internalconstruction; broken lines show hidden parts;

FIGURE 4 is a view similar to FIGURE 2 but showing a different positionof operation; broken lines show hidden parts;

FIGURE 5 is a similar View to FIGURE 4 showing another position ofoperation; broken lines show hidden parts;

FIGURE 6 is a view similar to FIGURES 4 and 5 showing still furtherposition of operation; broken lines show hidden parts;

FIGURE 7 is a view similar to FIGURES 4, 5 and 6 showing yet a differentposition -of operation; broken lines show hidden parts; Y

FIGURE 8 is a sectional view taken `along the line 8 8 of FIGURE 2. andis drawn to the same scale as FIGURE 1;

FIGURE 9 is a sectional view taken along the line 9 9 of FIGURE 2 and isdrawn to the same scale as FIGURE 1; and

FIGURE 10 is a sectional view taken along the line 10 10 of FIGURE 6 andis drawn to the same scale as FIGURE 1.

Referring iirst to FIGURE 2, as will be true throughout unless otherwisenoted, carriage 15 is slidably secured to a frame 16 by any suitablemeans as for ex- 3 ample by the grooves 17 which may be machined intothe carriage 15. The frame 16 is then provided with a way block 18 (seeFIGURES 8, 9 or 10) which is rigidly secured thereto and fits thegrooves 17` with a sliding fit.

A pair of cam plates 19 and 19a are slidably secured to the carriage asfor example by the means of interlocking slide ways 21, best seen inFIGURES 8, 9 and 10. Each of the cam plates 19 is provided with a camslot 23. In plates 19 and 19a are the slots 23 each which have an upperportion 23a and a lower portion 23b.

Means for selectively preventing relative motion between the carriage 15and alternatively the frame 16 and the cam plates 19 and 19a isprovided. In FIGURE 2 an illustrative means is shown to be a wedge lock24 which is pivotably secured to the carriage 15 in any suitable manneras for example by the `pin 25. Rollers 26 and 27 are rotatably securedto the wedge lock 24 by any suitable means as by the pins Z8 and 29. Agroove 30 of the same diameter as the roller 26 'but less than itsdiameter in depth, is provided in the frame member 16. A similar groove31, of the same diameter but less than half the diameter of roller 27 indepth as the roller 27, is provided in the cam plate 19. The lower edgeof cam plate 19 engages roller 27 causing roller 26 to remain seated inthe groove 30 which locks the frame 16 and carriage 15 together againstrelative movement. When the groove 31 of cam plate 19 registers with theroller 27, the wedge lock 24 will then pivot upward, the roller 27seating in the groove 31, and will release the locking engagementbetween the carriage 15 and the 'frame 16. The carriage 15 will thenslide along with the cam plates 19 being locked thereto by reason ofroller 26 engaging frame 16 exclusive of groove 30.

Conventional reciprocal driving means (not shown) is secured to plate 32which may drive several units such as the one shown hereinsimultaneously. Any suitable well known -motor (not shown) moves plate32 which is secured to the cam plates 19 and 19a by any suitable means,as for example, block 35 secured to both of the cam plates 19 and 19a.Shaft 33 and nuts 34 connect the plate 32 to the block 35. Screws as at22 (see FIGURE 8) are suitable means to secure block 35 to cam plates 19and 19a. Whenever the plate 32 is moved, therefore, the cam plates 19and 19a also move either independently of or with carriage 15.

An upper shroud support 37 is to be provided and is movably secured tothe carriage 15 here shown as pivoted in any convenient manner as bymeans of the pin 38.

Periodically the upper shroud support 37 is raised and lowered by camaction when the cam plates 19 and 19a move relative to the carriage. Thelinks 39 which are pivotably secured to the upper shroud support 37 bythe pin 40 are pivotally secured by the pin and bushing 44 to a set oflinks 41 which are pivotally secured at one of their ends to thecarriage 15 by the pin and bushing 43. Rotating cam followers 42 aresecured to the other ends of links 41. Rotating cam followers 42 engageand ride in the cam tracks 23. It will be apparent that as the camtracks 23 are driven to the left relative to carriage 15 (FIGURES 2-7)that the cam followers 42 will b e successively forced from the uppercam tracks 23a to the lower cam tracks 23b causing the upper shroudsupport 37 to be raised. Movement of the cam plates in a reversedirection lowers the upper shroud support.

An elongated slot 45 is provided in the upper shroud support 37 andreceives the cylindridal member 50. Two shafts 46 are slidably securedto the upper shroud support 37 by means of the holes 48 in which theshafts 46 fit. The shafts 46 are interconnected by both being secured tocylindrical member 50. Such a connection may be accomplished byinserting the shafts 46 through the rod 50 and pinning the shafts 46thereto. Rod 50 forms a loose sliding t with the slot 45. Itis desirableto form the tip ends of the shafts 46 with a conical point 51 having anlannular groove 52 therein for a purpose to be described later herein.

A guide shroud assembly 53 is seen in detail in FIG- URE 3 and iscomprised of: a skirt 54; a base member 55, which is secured to thelower shroud support 61 (in FIGURE 2); and a tapered locking tit 56 issecured to skirt 54. Skirt 54 is provided with two recesses 47 whichapproximate the tip dimensions of the shafts 46. The front end -of therecess 47 is closed by the slotted spring clip 57 which is threadablysecured in the recess 47. Spring clip 57 is provided to grip the annularportion 52 of the shafts 46 so that accidential release of the skirt 54is precluded. Locking tit 56 is provided with a slot 58, beveled at itsbottom, to facilitate the insertion of the locking bar 59. The lockingbar 59 is desirably formed as an integral part -of the shaft 60` that isslidably mounted in base member 55.

A lowershroud support 61 is pivotally secured to the carriage 15 topivot about the same axis as is provided for pivoting the upper shroudsupport 37, viz., the pin 38. Lower shroud support 61 may be built-upconstruction as is represented by the sides 63 seen in FIGURES 9 and l0.Sides 63 are held together in spaced relation by spacer block 64 that issecured to the sides 63 by any suitable means such as the member 65. Asecond spacer block 66 is secured between and to the sides 63 of thelower shroud support by suitable means as by the member 67. A recess 68in the lower face of the spacer block 66 and a corresponding recess 69in the carriage 15 receive resilient means such as compression spring70. This resilient means, inserted into the recesses 68 and 69,yieldingly urges lower shroud support 61 away from the carriage 15.

Mechanism for advancing locking bar 59 rides in slots 71 in each of thelower shroud support sides 63. Spring housing 72 is slidably mountedbetween the lower shroud support sides 63 with portions of the housingriding in the slots 71 as shown in FIGURE 10. Spring housing 72 isclosed by an end plate 74. A plunger 75 is slidably secured withinspring housing 72 and has a collar 76 secured to it. Suitable resilientmeans such as spring 77 is provided to urge the retaining collar 76toward the shoulder 78 of the spring housing 72. Secured to, and alignedwith, the plunger 75 includes a shaft 79 which engages a block 80 and issecured by pin 81 thereto. Rod 60 is secured to the block 80 by anysuitable means such as inserting the rod 60 through a hole in block 80with collar 82 on one side and nut 84 on the other. The structureprovided will compensate for wear on the locking bar 59 by forcing theshaft 60 further out and into the slot 58 as the locking bar 59 becomesworn.

The bell-cranks 85, seen in FIGURE 4, are pivotally secured to thecarriage 15 as at 86. At the upper end of the bell-cranks 85 areprovided the curved slots 87. The rod 50 is slidably and pivotablysecured to the bell cranks 85 by inserting the reduced ends of rod 50 inthe slots 87. The cam followers 89 are rotatably secured to the lowerends of the bell-cranks 85 and disposed to ride within the cam slots 23.

When the cam plates 19 move to the left, relative to carriage 15 as seenin FIGURES 2 and 4, the cam followers 89 will be successively forcedfrom the upper cam track 23a to the lower cam track 23b. This motion ofcam followers 89 will cause bell-cranks 85 to pivot clockwise (as viewedin FIGURE 4) causing the shafts 46 to move to the right and tips 51 tobe inserted into the shroud 53. Spring clips 57 will engage the annulargrooves 52 on the tips 51 and thus retain the shafts 46 in skirt 54.

A second pair of bell-cranks 90` are pivotally secured to the carriage15 as for example by means of the pin 91. The upper end of thesebell-cranks 90 are provided with elongated slots 92. Spring housing 72is pivotally and slidably secured to the bell-cranks 90 suitably as bythe pins 93 which are secured to the spring housing 72 and disposed inthe slots 92. At the opposite end of the bell-cranks 90 are camfollowers 94 rotatably secured and disposed in the cam tracks 23. Y

As the cam plates 19 move still farther to the left, relative tocarriage as seen in FIGURE 5, the cam followers 94 will move from theupper cam track 23a to the lower cam track 23b and cause the bell cranks90 to pivot in a counterclockwise direction. This action of bell-cranks90 will slide h-ousing 72 to the left and withdraw the locking bar 59from the slot 58, freeing the shroud skirt 54 from the shroud basemember 55.

As seen in FIGURE 6, still further movement to the left of shaft 33causes additional movement of cam plates 19 and 19a relative to carriage15 and cam follower 42 is forced into portion 23b of cam track 23. Arm41 pivots down and pulls link 39 down when the 'follower 42 thusdescends which pulls down on the rear end of upper shroud support 37 toraise shroud member 54 as shown. When the shroud is thus separated, itcan be withdrawn without disturbing a coil end previously supported byit.

Referring again to FIGURE 42. and comparing it to FIGURE 6, the movementof the cam plates 19 and 19a will be seen to be enough to place groove31 over wheel 27 of lock 24 or nearly so and bring the cam plates inclose proximity to the end of carriage 15. Further left movement ofshaft 33 tends to move both the carriage and the cam plates to the leftwhich is possible, because lock 24 may now move up to release carriage15- from frame 16 and secure the cam plates and carriage together. Inthis position the carriage is withdrawn from the core being wound to adistance suicient to clear the end of previously Wound coil.

An eccentricV 95, best seen in FIGURE 2, is rotatably secured as byshaft 96 to the carriage 15. Shaft 96 and eccentric 95 are pinnedtogether. Anreccentric follower 97 embraces eccentric 95 and is suitablypivoted to the lower shroud support 61 as by the nut and bolt 98, bestseen in FIGURE 9. An arm 99 is secured to the shaft 96 as by the pin 100through both members. The free end of arm 99 has secured to it a bearingmember 101, which is rotatably secured to the arm 99 as by headed pin102. Forked arm member 103 is secured to the shaft 96 and is disposed soas to be in the same plane as the cam plate 19. A Wheel 104 is rotatablysecured in the fork of arm 103 by any suitable means exemplary of whichis the pin 105. Arm 110 (FIGURES l, 7 and 8) is secured in a stationarymanner to frame 16.

When the carriage 15 is locked to the cam plates 19 and 19a and moves tothe position shown in FIGURE 7, the rotatable bearing member 101 willengage the rigid arm 110. As the moving elements 16 and 19 travelfurther to the left the arm 99 will be rotated clockwise and the lowershroud support 61 will be lifted by the rotating eccentric 95. Thisoccurs at the end of the stroke of the drive means 32 and the shroudassembly is reunited but in aV raised unlocked position. At this timethe core is indexed to present a new Set of slots.

When shaft 33 Ibegins its stroke to the right the carriage 15 and camplates 19 are in locked relation and move together. As the carriage andcalm plates move toward the core, bearing member 101 is moved away fromarm 110, but the lower shroud support remains elevated under theinfluence of spring 70 until the carriage has moved forward far enoughto bring roller 26 of lock 24 over groove 30 in frame 16. At this timethe shroud is near the core axially vbut is still in its elevatedposition so that it is radially spaced inwardly from previously woundcoil ends. Further movement off shaft 33 to the right commences movementof the cam plates relative to the carriage, as lock 24 is now securingthe carriage to the frame 16.

As soon as thecarn plate 19 moves to the right relative to carriage 15,wheel 104 is engaged by cam plate 19 and moved upward to the top surfaceof the cam plate which rotates shaft 96 counterclockwise. This motion ofshaft 96 rotates the eccentric to lower the follower'97 and the lowershroud support 61 compressing spring 70 in the process. Simultaneously,the cam followers 42 ride up from the lower cam tracks 23b to the uppercam tracks 23a. Cam followers 42, moving as described, cause the links41 to pivot in a counterclockwise direction viewed in FIGURE 5, aboutthe pivot `43. This action lifts the links 39, which causes an upwardforce to be exerted on the left end of the upper shroud support 37. Bothshroud supports 37 and 61 pivot together about the pin 3S in a clockwisedirection to their original lowered position .a-s seen in FIGURE 5. Asthe shroud structure moves down, its lbottom engages the top of theprevious coil ends and displaces them radially outwardly enough to allowa new coil to be wound with no coil end pile-up.

As shaft 33 urges the cam plates 19 further to the right, the camfollowers 94- will be forced to the upper cam tracks 23a causing thebell-cranks 90 to pivot in a clockwise direction and reinsert thelocking bar 59 into the slot 58 as shown in FIGURE 3. Shroud skirt 54 isnow relocked to the shroud base member 55.

As the cam plates 19 move yet further to the right, the cam followers 89will be forced to the upper cam tracks 23a causing the bell-cranks 85 topivot in 'a counterclockwise direction. 'Ihis pivoting of the bell-crank85 causes the shafts 46 to be withdrawn from the shroud 53 leaving anopen pocket around which wire coils may be wound.

It will be seen, then, that when the shaft 33 completes its returnstroke, shroud 53, which is reunited, is placed in position, as Shown inFIGURE 2, to guide the Iwinding ofv the next coil into the rotatingelectrical machinery element which has -been indexed during the shroudsrelease cycle to present fresh slots for winding.

Although only one of the pocket shroud structures has been shown anddescribed in detail herein, it is to be understood that they Ifunctionin pairs, and in FIGURE l a portion of a corresponding shroud wire coilend supporting mechanism 153 may be seen. Structure to support andoperate shroud assembly 153 would be identical with that for shroudassembly 53. In addition, stator core, 12) may have more than one pairof shroud assemblies presented to it at one time so that coils may beformed simultaneously at more than one position on the stator core.

In FIGURE 1 a coil 115 is sho-wn Iformed around the shroud assemblieswhich would -be the rst coil wound in a given stator. This coil will bedisplaced when the second coil is wound in order to allow the secondcoil to be wound in an identical position relative to its stator slotsas the rst coil to stator slots to which it Iwas wound.

Turning now to FIGURE 2 the end of the coil 115 can be seen to -bedisplaced radially outward of the stator core by the shroud assembly 53,as the shroud is positioned to wind the Second coil 116. As shown alsoin that ligure any suitable structure secured to frame 16 and designatedhere supports the st-ator core 120 in a stationary man,- ner while thecoils are being formed on it. The core support 125 is turned by anindexing structure that is not inventive hence neither shown nordescribed herein.

When a number of coils are being Wound simultaneously at differentlocations, plate member 32 has a plurality of shafts comparable to theshaft of 33 secured to it so that all of the shroud `assem-blies thatare actuated in an identical manner, as the various steps of the windingprocedure take place.

'Ihe mechanism for winding the wire upon the shroud assemblies isneither shown nor described as it may be conventional. United StatesPatent 3,025,008 shows a suitable wire laying gun and driving mechanismfor the gun to wind wire about a pair of shroud assemblies. The drivingmechanism will carry a plural gun if several pairs of shroud assembliesare used, as the movement required is the same in each case.

It is apparent that many modifications and variations of this inventionas hereinabove set forth may be made without departing from the spiritand scope thereof. The specic embodiments described yare given by way ofexample only and the invention is limited only by the terms of theappended claims.

What is claimed is:

1. A method of winding coils on slotted electrical machine cores usingshrouds to guide and support the wire while a coil is being formed, eachof the shrouds having a first portion and a second portion, said methodcomprising: supporting said shrouds adjacent to a sl-otted electricalmachine core in alignment with one another on opposite sides of thecore; forming a coil around the `shrouds and into selected slots in thecore; temporarily engaging and supporting the first portion of eachshroud at its end most distant from said core with temporary supportmeans; disconnecting the shroud portions at their ends next to the core;separating the shroud portions; withdrawing the entire shroud from thecore to disengage it from a `wound coil; moving one portion of eachshroud to re-engage it with the ohter portion of the shroud at theirends nearer the core; indexing the core to a new group of slots;advancing the shrouds to a position adjacent to the core and radiallyspaced from a wound coil; moving the shroud into coil forming positionand simultaneously displacing, radially, previously wound coil ends tomake room for the ends of a coil to be wound; resecuring the shroudportions to each other at their ends nearest to the core; disconnectingand withdrawing the temporary support means; forming another coil; andrepeating this procedure until all desired coils are wound.

2. Means for supporting and forming the ends of coils being wound ontoslotted cores for electric machines comprising: a frame; a coresupporting means on said frame; carriage slidably mounted on said frame;a cam means slidably mounted on said carriage; lock means movablysecured to said carriage and alternately engaging said frame and cammeans and thereby alternately locking said carriage to said frame andsaid cam means; means secured to said cam means for sliding said cammeans to and fro with respect to said frame; a coil end support basemember, means mounting said base member on said carriage for movementgenerally normal to the direction of sliding motion of said carriagerelative to said frame; a coil end forming and supporting skirt portion,means separably securing said skirt portion to said base member at itsend nearest -to an electrical core to be wound; a temporary supportmeans movably secured to said carriage to move in a direction generallyparallel to the direction the motion of said carriage relative to saidframe and in a second direction substantially normal to the direction ofmotion said carriage relative to said frame; securing means movablysecured to said coil end support base member alternately engaging andreleasing said skirt portion; linkage secured to each of said temporarysupport means and said securing means; cam followers secured to each ofsaid linkages and engaging said cam means; lever means secured to saidsupport base member; stationary arm means secured to said frame at apoint remote from the location of said carriage during winding andadapted to be engage-d by said lever means secured to said coil endsupport base member to move said wire guiding base away from saidcarriage; said lock means locking said carriage to said frame when saidcarriage is relatively close to an electrical machine core supported onsaid frame and locking said cam means to said carriage 'when saidcarriage is withdrawn relative to an electrical machine core beyond apredetermined point; whereby sliding said cam means `relative to saidframe when said carriage is near a core moves said cam means relative tosaid carriage and moving said cam means when said carriage is removedfrom a core moves said cam means and said carriage together, said levermeans engaged by said cam means when said carriage is moved near to acore to move said coil end support base member toward said carriage.

3. The structure of claim 2 wherein said means separably securing theskirt portion to the base includes a 'pierced locking tit on said coilend forming and supporting skirt portion that engages a well in saidbase member and means slidably mounted in said base member. to passthrough the well thereof to engage and release said pierced titselectively.

4. The structure of claim 2 in which said temporary support meanscomprises a pair of shaft members slidably mounted on said carriage tomove generally parallel to the sliding motion of said carriage;apertures in said coil end forming and supporting skirt portion at theend remote from a core to be wound; said shaft members entering saidapertures to engage and support said coil end forming and supportingskirt portion temporarily.

5. The structure lof claim 2 in which the linkage means for moving saidcoil end support base member generally normal to the direction motion ofsai-d carriage; comprises: shaft means pivoted to said carriage; an armmeans secured to said shaft and aligned with a portion of said cammeans; a roller mounted on the end of said arm to engage a portion ofsaid cam means; a second arm secured to and extending from said shaftand having a roller on its end lof; an arm xed to said frame andengaging said second arm roller; an eccentric secured to said shaft; andan eccentric follower embracing said eccentric; said eccentric followedbeing pivoted to said movable -coil end support base member said coilend support base member pivoted to said frame at a point spaced fromsaid eccentric follower pivot.

6. The structure of claim 2 in which said `cam means comprises: a pairof spaced cam plates secured together and slidably secured to saidcarriage; each of said cam plates having a cam track therein having anupper portion, lower portion and a diagonal interconnecting portion; oneof said cam yplates having a groove in its lower marginal edge to engagesaid lock means.

7. The structure of claim 2 wherein said means for selectively lockingsaid carriage to said cam means and frames comprises: a triangularmember pivotably secured to said carriage; at one corner thereof rollersrotatably secured to said triangular member at each of the remainingcorners thereof; a groove in said frame of the same radius as saidroller but less than one diameter thereof in depth; a groove in saiddriven cam means of the same radius as said roller but less than onediameter thereof in depth; said groove in said cam means being spacedfrom one end thereof a distance approximating the desired movementbetween said carriage and said cam means.

8. A means for forming and supporting an end of a coil wound on aslotted core comprising: a frame; a pocket forming base portion; meansmovably securing the base portion to said frame for movement bothradially and axially with respect to a core to be wound; a pocketforming skirt portion; means separably securing the skirt portion tosaid pocket forming base portion at its end nearest to a slotted core tobe wound; a separate movable support means for selectively engaging andsupporting said pocket forming skirt portion; means for moving thesupport means linto engagement with said skirt portion and separatingthe skirt portion from the base portion; means secured to said frame forwithdrawing said pocket forming base and skirt portions away from a corebeing wound when said pocket forming portions are separated; meanssecured to said frame and said pocket forming base portion forre-engaging said pocket portions after they have been withdrawn; meanssecured to said frame and said pocket forming portions to move both ofthem axially relative toward a core being wound and displaced radiallyfrom a coil supporting position; and means secured to said frame andsaid pocket forming portions for moving said pocket forming portionsradially to a coil end supporting -position adjacent a core being woundafter said pocket forming portions are correctly placed axially tosupport a coil end.

9. A device for guiding land supporting the end of a coil Wound intoslots in an electrical machine core comprising a shroud assembly havinga base and a skirt forming a pocket for receiving the end of a c-oilWound on the slots of an electrical machine core; lock means separablysecuring the base and skirt together at their portions adjacent to theelectrical machine core being wound; auxiliary support means movable toand from said shroud assembly for moving the skirt from the base andtemporarily supporting the skirt; means for releasing said lock meanswhereby the auxiliary support means can move the References Cited UNITEDSTATES PATENTS 9/1960 Moore 242-1.l 6/1961 AGreene et al 242-1.1

FRANK J. COHEN, Prmaly Examiner.

9. A DEVICE FOR GUIDING AND SUPPORTING THE END OF A COIL WOUND INTOSLOTS IN AN ELECTRICAL MACHINE CORE COMPRISING A SHROUD ASSEMBLY HAVINGA BASE AND A SKIRT FORMING A POCKET FOR RECEIVING THE END OF A COILWOUND ON THE SLOTS OF AN ELECTRICAL MACHINE CORE; LOCK MEANS SEPARABLYSECURING THE BASE AND SKIRT TOGETHER AT THEIR PORTIONS ADJACENT TO THEELECTRICAL MACHINE CORE BEING WOUND; AUXILIARY SUPPORT MEANS MOVABLE TOAND FROM SAID SHROUD ASSEMBLY FOR MOVING THE SKIRT FROM THE BASE ANDTEMPORARILY SUPPORTING THE SKIRT; MEANS FOR RELEASING SAID LOCK MEANSWHEREBY THE AUXILIARY SUPPORT MEANS CAN MOVE THE SKIRT FROM THE BASE;AND MEANS FOR MOVING THE SEPARATED BASE AND SKIRT FROM THE COIL THAT HASBEEN WOUND IN THE POCKET;